The most important way of self-monitoring for diabetic patients is to take a portable fingertip glucose meter at home for self-monitoring of blood glucose. It is recommended that patients can measure fasting blood glucose once a day, blood glucose two hours after a meal once a day, and monitor at least 2-3 times a week. When the patient goes to the outpatient clinic, he/she can provide the results of self-monitoring of blood glucose at home to the endocrinologist. Based on the results, the doctor will guide the patient’s diet and treatment, which is very conducive to the control of diabetic patients’ blood glucose. In addition to fingertip blood glucose, there are also urine analysis and glycated hemoglobin tests, which require patients to go to the hospital regularly for fingertip blood glucose, urine analysis and glycated hemoglobin tests, which can be a more comprehensive assessment of the overall situation of diabetic patients’ blood glucose control.